/Engine/Source/Developer/TraceInsights/Public/Insights/IUnrealInsightsModule.h
Registers a major tab layout. This defines how the major tab will appear when spawned. If this is not called prior to tabs being spawned then the built-in default layout will be used.
void RegisterMajorTabConfig ( const [FName](API\Runtime\Core\UObject\FName) & InMajorTabId, const [FInsightsMajorTabConfig](API\Developer\TraceInsights\Insights\FInsightsMajorTabConfig) & InConfig )